Note
Go to the end to download the full example code.
Ship drift
from datetime import datetime
from opendrift.models.shipdrift import ShipDrift
o = ShipDrift(loglevel=20)
o.add_readers_from_list([
'https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml',
'https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc',
'https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml'
])
09:35:23 INFO opendrift.models.basemodel:515: OpenDriftSimulation initialised (version 1.11.13 / v1.11.13-48-g5bea84b)
Seed ship elements at defined position and time Note: beam/length ratio is larger than allowed, but is then clipped internally
o.seed_elements(lon=5.0, lat=63.0, radius=1000, number=1000,
time=datetime.utcnow(),
length=80.0, beam=20.0, height=9.0, draft=4.0)
09:35:23 WARNING opendrift.models.shipdrift:181: Ratio of beam to length should be in range 0.12 to 0.18, given range is 0.25-0.25. Using border value.
09:35:23 INFO opendrift.models.basemodel.environment:218: Adding a dynamical landmask with max. priority based on assumed maximum speed of 2.0 m/s. Adding a customised landmask may be faster...
09:35:30 INFO opendrift.models.basemodel.environment:245: Fallback values will be used for the following variables which have no readers:
09:35:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_x_velocity: 0.000000
09:35:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_y_velocity: 0.000000
09:35:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_significant_height: 0.000000
09:35:30 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
Running model
o.run(steps=24, stop_on_error=True)
09:35:30 INFO opendrift.models.basemodel:936: Using existing reader for land_binary_mask
09:35:30 INFO opendrift.models.basemodel:947: All points are in ocean
09:35:30 INFO opendrift.models.basemodel:2038: 2024-10-01 09:35:23.745270 - step 1 of 24 - 1000 active elements (0 deactivated)
09:35:30 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
09:35:37 INFO opendrift.readers.reader_netCDF_CF_generic:325: Detected dimensions: {'x': 'x', 'y': 'y', 'time': 'time'}
09:35:37 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
09:35:38 INFO opendrift.readers.reader_netCDF_CF_generic:325: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
09:35:38 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
09:35:43 INFO opendrift.readers.reader_netCDF_CF_generic:325: Detected dimensions: {'y': 'rlat', 'x': 'rlon', 'time': 'time'}
09:35:44 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:44 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:44 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:44 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:45 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:45 INFO opendrift.models.basemodel:2038: 2024-10-01 10:35:23.745270 - step 2 of 24 - 1000 active elements (0 deactivated)
09:35:46 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:46 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:47 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:47 INFO opendrift.models.basemodel:2038: 2024-10-01 11:35:23.745270 - step 3 of 24 - 1000 active elements (0 deactivated)
09:35:48 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:48 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:48 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:48 INFO opendrift.models.basemodel:2038: 2024-10-01 12:35:23.745270 - step 4 of 24 - 1000 active elements (0 deactivated)
09:35:49 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:49 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:50 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:50 INFO opendrift.models.basemodel:2038: 2024-10-01 13:35:23.745270 - step 5 of 24 - 1000 active elements (0 deactivated)
09:35:51 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:51 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:52 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:52 INFO opendrift.models.basemodel:2038: 2024-10-01 14:35:23.745270 - step 6 of 24 - 1000 active elements (0 deactivated)
09:35:53 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:53 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:53 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:53 INFO opendrift.models.basemodel:2038: 2024-10-01 15:35:23.745270 - step 7 of 24 - 1000 active elements (0 deactivated)
09:35:55 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:55 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:55 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:55 INFO opendrift.models.basemodel:2038: 2024-10-01 16:35:23.745270 - step 8 of 24 - 1000 active elements (0 deactivated)
09:35:57 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:57 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:58 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:35:58 INFO opendrift.models.basemodel:2038: 2024-10-01 17:35:23.745270 - step 9 of 24 - 1000 active elements (0 deactivated)
09:35:59 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:35:59 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:00 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:00 INFO opendrift.models.basemodel:2038: 2024-10-01 18:35:23.745270 - step 10 of 24 - 1000 active elements (0 deactivated)
09:36:01 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:01 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:02 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:02 INFO opendrift.models.basemodel:2038: 2024-10-01 19:35:23.745270 - step 11 of 24 - 1000 active elements (0 deactivated)
09:36:04 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:04 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:04 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:04 INFO opendrift.models.basemodel:2038: 2024-10-01 20:35:23.745270 - step 12 of 24 - 1000 active elements (0 deactivated)
09:36:06 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:06 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:06 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:06 INFO opendrift.models.basemodel:2038: 2024-10-01 21:35:23.745270 - step 13 of 24 - 1000 active elements (0 deactivated)
09:36:08 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:08 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:08 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:08 INFO opendrift.models.basemodel:2038: 2024-10-01 22:35:23.745270 - step 14 of 24 - 1000 active elements (0 deactivated)
09:36:10 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:10 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:11 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:11 INFO opendrift.models.basemodel:2038: 2024-10-01 23:35:23.745270 - step 15 of 24 - 1000 active elements (0 deactivated)
09:36:12 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:12 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:13 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:13 INFO opendrift.models.basemodel:2038: 2024-10-02 00:35:23.745270 - step 16 of 24 - 1000 active elements (0 deactivated)
09:36:14 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:14 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:15 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:15 INFO opendrift.models.basemodel:2038: 2024-10-02 01:35:23.745270 - step 17 of 24 - 1000 active elements (0 deactivated)
09:36:16 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:16 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:17 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:17 INFO opendrift.models.basemodel:2038: 2024-10-02 02:35:23.745270 - step 18 of 24 - 1000 active elements (0 deactivated)
09:36:18 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:18 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:19 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:19 INFO opendrift.models.basemodel:2038: 2024-10-02 03:35:23.745270 - step 19 of 24 - 1000 active elements (0 deactivated)
09:36:20 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:20 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:21 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:21 INFO opendrift.models.basemodel:2038: 2024-10-02 04:35:23.745270 - step 20 of 24 - 1000 active elements (0 deactivated)
09:36:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:24 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:24 INFO opendrift.models.basemodel:2038: 2024-10-02 05:35:23.745270 - step 21 of 24 - 1000 active elements (0 deactivated)
09:36:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:26 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:26 INFO opendrift.models.basemodel:2038: 2024-10-02 06:35:23.745270 - step 22 of 24 - 1000 active elements (0 deactivated)
09:36:27 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:27 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:28 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:28 INFO opendrift.models.basemodel:2038: 2024-10-02 07:35:23.745270 - step 23 of 24 - 1000 active elements (0 deactivated)
09:36:30 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:30 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:31 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
09:36:31 INFO opendrift.models.basemodel:2038: 2024-10-02 08:35:23.745270 - step 24 of 24 - 1000 active elements (0 deactivated)
09:36:32 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:32 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
09:36:33 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
Print and plot results
print(o)
o.plot(linecolor='orientation')
#o.animation(color='orientation', markersize=20, filename="orientation.gif", legend=['left','right'],colorbar=False,cmap='bwr')
o.animation(color='orientation', legend=['left','right'], markersize=20, colorbar=False, cmap='bwr')
===========================
--------------------
Reader performance:
--------------------
global_landmask
0:00:00.0 total
0:00:00.0 preparing
0:00:00.0 reading
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
0:00:15.0 total
0:00:00.0 preparing
0:00:14.8 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
0:00:17.8 total
0:00:00.0 preparing
0:00:17.6 reading
0:00:00.2 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
0:00:15.5 total
0:00:00.0 preparing
0:00:15.3 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
Performance:
1:09.4 total time
7.2 configuration
0.0 preparing main loop
0.0 moving elements to ocean
1:02.2 main loop
0.6 updating elements
0.0 cleaning up
--------------------
===========================
Model: ShipDrift (OpenDrift version 1.11.13)
1000 active ShipObject particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
land_binary_mask
1) global_landmask
-----
x_sea_water_velocity
y_sea_water_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
2) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
-----
x_wind
y_wind
1) https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
-----
sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
sea_surface_wave_significant_height
sea_surface_wave_stokes_drift_x_velocity
sea_surface_wave_stokes_drift_y_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
Discarded readers:
Time:
Start: 2024-10-01 09:35:23.745270 UTC
Present: 2024-10-02 09:35:23.745270 UTC
Calculation steps: 24 * 1:00:00 - total time: 1 day, 0:00:00
Output steps: 25 * 1:00:00
===========================
09:37:00 INFO opendrift.models.basemodel:4608: Saving animation to /root/project/docs/source/gallery/animations/example_shipdrift_0.gif...
09:38:10 INFO opendrift.models.basemodel:3037: Time to make animation: 0:01:13.423532
Total running time of the script: (2 minutes 58.760 seconds)